标题： PT对称声子激光器 显示英文标题

标题： PT-Symmetric Phonon Laser

摘要： 通过利用与耦合微腔相关的最新进展，我们引入了具有平衡增益和损耗的PT对称声子激光器的概念。 这是通过向其中一个微腔引入增益，使其平衡另一个微腔的被动损耗来实现的。 在增益-损耗平衡附近，腔内光子强度与输入功率之间出现强烈的非线性关系。 这进而导致光学压力和机械增益的显著增强，从而产生高效的声音子激光作用。 这些结果为通过PT对称概念操控光机械系统提供了一种有前景的方法。 潜在的应用包括增强机械冷却和设计声子激光放大器。 显示英文摘要

摘要： By exploiting recent developments associated with coupled microcavities, we introduce the concept of PT-symmetric phonon laser with balanced gain and loss. This is accomplished by introducing gain to one of the microcavities such that it balances the passive loss of the other. In the vicinity of the gain-loss balance, a strong nonlinear relation emerges between the intracavity photon intensity and the input power. This then leads to a giant enhancement of both optical pressure and mechanical gain, resulting in a highly efficient phonon-lasing action. These results provide a promising approach for manipulating optomechanical systems through PT-symmetric concepts. Potential applications range from enhancing mechanical cooling to designing phonon-laser amplifiers.